Put it in the oven on the lowest heat you have. Mine is 140 leave it in for 15 minutes and turn the oven off. When the pan is cool take them out and seal immediately. I use them in addition to my o2 absorbers so can't say for sure how well they work The second time around, but I haven't lost any food to spoilage.(hope that helped.)

Dream like you will live forever, Live like you will die today[size=85][/size]

to rejuvinate you need low oven heat for an extended time .... crack open the oven to allow the moisture to escape .... turn the packs over a few times during the drying time period .... time varies per size of desiccant pack ..... I have some large 2 lb packs that take a couple of hours in the oven .... test for complete pack dryness using a zip lock bag .... place the warm desiccant bags into the zip lock .... any accumulated moisture on the bag surface indicates incomplete drying .....

Low heat and a long processing time is required to properly dry out silica in Tyvek.

Do not try to cheat the process by starting with a hot oven or using excessive heat, doing so will destroy the storage medium and/or Silica material.

Products that include reactivation instruction users should follow the exact manufacture recommended instructions.

Important: Check your ovens temperature for proper heating levels.

Ovens must be a vented model to allow moisture released from the Silica to escape during the heating process. The best oven choice is convection or forced air system as it provides the best air flow to aid in drying the packets.

Tyvek has a melting point of 250 degrees Fahrenheit and will melt if you reach or exceed this temperature!

Place packets on a wire rack shelf to improve air-flow, do not pile up packets. When processing more than one rack of packets leave 1”-2” of space between racks, rack should be at lest 1-1/2 feet from the heat source.

The beads have trapped moisture so you need to start the reactivation process with a cold oven, this help prevent seal failure when the water vapor starts to cause the packets to expand as water molecules are released.

Silica can be reactivated at temperatures between 220 - 240 degrees, the ovens Temperature should not increase faster than 0.25 to 0.50 deg F per minute.

The Desiccant will require 12-24 hours of drying time depending on the volume of product being reactivated.

Packets reactivated should be promptly stored in a heat resistant air tight container to prevent moisture from being re-absorbed during the cooling period.

Once packets have cooled you can replace them in your area of humidity control or store these in an air tight container until ready to use.

Try the food dehydrater as not to heat it up to much...I have several large military size silica packs in the brown bags and they say "Desi Pak MIL-D-3464 type I & II reactivation in bag 16 hours at 245 deg.F"Made by United Desicants 101 Christine Dr. Belen NM 87002 ( not sure when these packs were made but they work very well in my ammo cans and gun cases)

Vincit Qui Patitur (He who endures conquers)“It is not the strongest or the most intelligent who will survive but those who can best manage change.” ― Charles Darwin

P!No, you may not quote me for any book, or use any of my posts on this topic or any other for any reason without my express written permission.

to rejuvinate you need low oven heat for an extended time .... crack open the oven to allow the moisture to escape .... turn the packs over a few times during the drying time period .... time varies per size of desiccant pack ..... I have some large 2 lb packs that take a couple of hours in the oven .... test for complete pack dryness using a zip lock bag .... place the warm desiccant bags into the zip lock .... any accumulated moisture on the bag surface indicates incomplete drying .....

Just use common sense...all yout trying to do is dehydrate the gel...Im not sure if the higher temp brings it back to a pre used condition and keeps the particals from sticking together or what. I just use the instructions that come on the bags.

Vincit Qui Patitur (He who endures conquers)“It is not the strongest or the most intelligent who will survive but those who can best manage change.” ― Charles Darwin

P!No, you may not quote me for any book, or use any of my posts on this topic or any other for any reason without my express written permission.